extension_ci: Run tests on pushes to main (#44079)

This seems sensible to do - it already was the case prior but
indirectly, lets rather be explicit about this.

Release Notes:

- N/A

Co-authored-by: Agus Zubiaga <agus@zed.dev>

.github/workflows/extension_bump.yml

@@ -25,33 +25,6 @@ on:
         description: The app secret for the corresponding app ID
         required: true
 jobs:
-  check_extension:
-    if: (github.repository_owner == 'zed-industries' || github.repository_owner == 'zed-extensions')
-    runs-on: namespace-profile-2x4-ubuntu-2404
-    steps:
-    - name: steps::checkout_repo
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
-      with:
-        clean: false
-    - id: cache-zed-extension-cli
-      name: extension_tests::cache_zed_extension_cli
-      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830
-      with:
-        path: zed-extension
-        key: zed-extension-${{ env.ZED_EXTENSION_CLI_SHA }}
-    - name: extension_tests::download_zed_extension_cli
-      if: steps.cache-zed-extension-cli.outputs.cache-hit != 'true'
-      run: |
-        wget --quiet "https://zed-extension-cli.nyc3.digitaloceanspaces.com/$ZED_EXTENSION_CLI_SHA/x86_64-unknown-linux-gnu/zed-extension"
-        chmod +x zed-extension
-      shell: bash -euxo pipefail {0}
-    - name: extension_tests::check
-      run: |
-        mkdir -p /tmp/ext-scratch
-        mkdir -p /tmp/ext-output
-        ./zed-extension --source-dir . --scratch-dir /tmp/ext-scratch --output-dir /tmp/ext-output
-      shell: bash -euxo pipefail {0}
-    timeout-minutes: 2
   check_bump_needed:
     if: (github.repository_owner == 'zed-industries' || github.repository_owner == 'zed-extensions')
     runs-on: namespace-profile-2x4-ubuntu-2404
@@ -89,7 +62,6 @@ jobs:
     timeout-minutes: 1
   bump_extension_version:
     needs:
-    - check_extension
     - check_bump_needed
     if: |-
       (github.repository_owner == 'zed-industries' || github.repository_owner == 'zed-extensions') &&
@@ -144,7 +116,6 @@ jobs:
     timeout-minutes: 1
   create_version_label:
     needs:
-    - check_extension
     - check_bump_needed
     if: (github.repository_owner == 'zed-industries' || github.repository_owner == 'zed-extensions') && github.event_name == 'push' && github.ref == 'refs/heads/main' && needs.check_bump_needed.outputs.needs_bump == 'false'
     runs-on: namespace-profile-8x16-ubuntu-2204